Abstract: Abstract：Silica（SiO2）matrix composite materials toughened by continuous fiber and fabric are the ideal materials for radomes, possessing many outstanding properties, for instance, high strength, excellent toughness and low density and so on. Considering different molding technology and characteristics of various toughening methods, a comprehensive introduction is provided to the present research situation and characteristic of SiO2 matrix composites toughened by particle, whisker or continuous fiber. Some three dimensional configurations suitable for SiO2 matrix composites, including 2.5D woven fabric structure, three-dimensional orthogonal woven fabric structure, three-dimensional braided fabric structure and so on, are mainly introduced. Combining with the future of the radome materials for missile, it is pointed out that the application prospect of three-dimensional fabric on SiO2 matrix composite materials is extensive.

Key words: silica matrix composite materials, radome, three-dimensional fabric, 3-D braided, 2.5D woven